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dc.contributor.authorKyrkjebø, Signe
dc.contributor.authorCassidy, Andrew
dc.contributor.authorLambrick, Sam
dc.contributor.authorJardine, Andrew
dc.contributor.authorHolst, Bodil
dc.contributor.authorHornekær, Liv
dc.date.accessioned2024-03-25T13:05:00Z
dc.date.available2024-03-25T13:05:00Z
dc.date.created2023-11-09T09:22:12Z
dc.date.issued2023
dc.identifier.issn2296-2646
dc.identifier.urihttps://hdl.handle.net/11250/3124100
dc.description.abstractThe dynamics of water diffusion on carbon surfaces are of interest in fields as diverse as furthering the use of graphene as an industrial-coating technology and understanding the catalytic role of carbon-based dust grains in the interstellar medium. The early stages of water–ice growth and the mobility of water adsorbates are inherently dependent on the microscopic mechanisms that facilitate water diffusion. Here, we use 3He spin-echo quasi-inelastic scattering to probe the microscopic mechanisms responsible for the diffusion of isolated water molecules on graphene-covered and bare Ir(111). The scattering of He atoms provides a non-invasive and highly surface-sensitive means to measure the rate at which absorbates move around on a substrate at very low coverage. Our results provide an approximate upper limit on the diffusion coefficient for water molecules on GrIr(111) of <10−12 m2/s, an order of magnitude lower than the coefficient that describes the diffusion of water molecules on the bare Ir(111) surface. We attribute the hindered diffusion of water molecules on the GrIr(111) surface to water trapping at specific areas of the corrugated moiré superstructure. Lower mobility of water molecules on a surface is expected to lead to a lower ice nucleation rate and may enhance the macroscopic anti-icing properties of a surface.en_US
dc.language.isoengen_US
dc.publisherFrontiersen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.title3He spin-echo scattering indicates hindered diffusion of isolated water molecules on graphene-covered Ir(111)en_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.source.articlenumber1229546en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doi10.3389/fchem.2023.1229546
dc.identifier.cristin2194354
dc.source.journalFrontiers in Chemistryen_US
dc.identifier.citationFrontiers in Chemistry. 2023, 11, 1229546.en_US
dc.source.volume11en_US


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